Which data category would include engine RPM and coolant temperature in NMEA 2000 PGNs?

Which data category would include engine RPM and coolant temperature in NMEA 2000 PGNs?

• A. Navigation
• B. Environmental
• C. Engine
• D. Time

Answer: (C)

Data categories in NMEA 2000 group PGNs by the system they describe. Engine PGNs carry data from the propulsion system’s sensors, so engine RPM and coolant temperature come from the engine itself and indicate how the engine is operating and its health. That makes them a natural fit for the Engine category. Navigation PGNs cover position, course, and other navigation-related data; Time PGNs cover clocks; Environmental PGNs cover ambient or non-engine conditions. So engine RPM and coolant temperature aren’t navigation, time, or environmental data—they’re engine data.

Data categories in NMEA 2000 group PGNs by the system they describe. Engine PGNs carry data from the propulsion system’s sensors, so engine RPM and coolant temperature come from the engine itself and indicate how the engine is operating and its health. That makes them a natural fit for the Engine category. Navigation PGNs cover position, course, and other navigation-related data; Time PGNs cover clocks; Environmental PGNs cover ambient or non-engine conditions. So engine RPM and coolant temperature aren’t navigation, time, or environmental data—they’re engine data.